regarding DE's charges:
§ 18.2-32
First and second degree murder defined; punishment.
Murder, other than capital murder, by poison, lying in wait, imprisonment, starving, or by any willful, deliberate, and premeditated killing, or in the commission of, or attempt to commit, arson, rape, forcible sodomy, inanimate or animate object sexual penetration, robbery, burglary or abduction, except as provided in § 18.2-31, is murder of the first degree, punishable as a Class 2 felony.
All murder other than capital murder and murder in the first degree is murder of the second degree and is punishable by confinement in a state correctional facility for not less than five nor more than forty years.
https://vacode.org/18.2-32/
Regarding NK's charges:
http://vtnews.vt.edu/documents/013116-vtnews-bpdrelease2.pdf
§ 18.2-323.02. Prohibition against concealment of dead body; penalty.
Any person who transports, secretes, conceals or alters a dead body, as defined in § 32.1-249, with malicious intent and to prevent detection of an unlawful act or to prevent the detection of the death or the manner or cause of death is guilty of a Class 6 felony.
http://law.lis.virginia.gov/vacode/title18.2/chapter7/section18.2-323.02/
§ 18.2-19
How accessories after the fact punished; certain exceptions.
In the case of every felony, every accessory after the fact shall be guilty of a Class 1 misdemeanor; provided, however, no person in the relation of husband or wife, parent or grandparent, child or grandchild, brother or sister, by consanguinity or affinity, or servant to the offender, who, after the commission of a felony, shall aid or assist a principal felon or accessory before the fact to avoid or escape from prosecution or punishment, shall be deemed an accessory after the fact.
https://vacode.org/18.2-19/